Use of a Ziegler-Natta catalyst to make a polypropylene homopolymer or random copolymer having a high melt flow rate
US7772338B2 · kind B2 · utility
5Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Apr 24, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the production of a high melt flow propylene homopolymer or random copolymer with low odor and low volatiles content, which is suitable for thin-walled injection molding applications, said process comprising the step of polymerizing propylene and one or more optional comonomers in presence of a Ziegler-Natta catalyst comprising a titanium compound having at least one titanium-halogen bond, and a diether compound as internal electron donor, both supported on a magnesium halide in active form, an organoaluminium compound and an optional external donor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.